I bet ford solved this on the Gen 3 motors (18-20). Report back after you have a few track days with TRACK tires.
It is certainly possible that it is fixed on the 18s and for what it's worth, throughout my track experience I have yet to see an 18 with this problem... in fact, I have a buddy with a late build 17 that doesn't seem to have the problem at all and he runs an almost identical setup as me... 305 NT01, 1.2g+, and similar driving skill as well.
Yes. Just put a wrench on the hex at its base and unscrew it.
Just an update on the GT500 valve cover - they fit perfectly, exactly like stock including all the tabs for mounting the zip tie wire clips. I thought it was interesting that they are held onto the head with about twice as many bolts as the stock covers. Not sure why the plastic covers don't utilize all the inserts in the head.
Need to wait about a month until I go to AMP again to confirm they solve the issue.
Edit: Forgot to mention that I feel like these covers quieted down the engine a bit. I noticed it immediately on start up. There's a lot going on in the valve train on these cars and I think the thick aluminum covers insulate that a bit. That's a nice side effect.
They seemed to work for me. I've only tracked the car twice with the new covers. I was previously having the oil ingestion issue on a particular right hander with my 285/35R19 Conti ECS tires, but no issues on that same track the last time I went with new 305/30R19 RS-4 tires mounted on 19x11" wheels and I was definitely cornering a bit harder than I had previously. No more smoke or weird things. I had other unrelated massive issues, but the covers themselves are great and worked to control oil much better.
What year and what engine size do you have?
I'm putting the updated cover on an '11 with Coyote. My old oil dipstick tube presses in and locks in with for fingers. The new cover is different. I'm thinking about trying the GT350 version.